#!/usr/bin/env python
# -*- coding: utf-8 -*-

a = [56, 2, 1, 893, -0.4]  # 列表类型
b = len(a)  # 结果为 5
b = max(a)  # 结果为 893
b = min(a)  # 结果为 -0.4
print(list(reversed(a)))

print(sorted(a))
